55790458 has 4 divisors (see below), whose sum is σ = 83685690. Its totient is φ = 27895228.

The previous prime is 55790443. The next prime is 55790489. The reversal of 55790458 is 85409755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85409755 = 5 ⋅17081951.

It can be written as a sum of positive squares in only one way, i.e., 54804409 + 986049 = 7403^2 + 993^2 .

It is a super-2 number, since 2×55790458² = 6225150407699528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13947613 + ... + 13947616.

Almost surely, 2^55790458 is an apocalyptic number.

55790458 is a deficient number, since it is larger than the sum of its proper divisors (27895232).

55790458 is a wasteful number, since it uses less digits than its factorization.

55790458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27895231.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 55790458 is about 7469.3010382498. The cubic root of 55790458 is about 382.1084503350.

The spelling of 55790458 in words is "fifty-five million, seven hundred ninety thousand, four hundred fifty-eight".